CVE-2020-2278 : Security Advisory and Response

Jenkins Storable Configs Plugin 1.0 and earlier versions allow attackers with Job/Configure permission to replace any '.xml' file on the Jenkins controller with a job config.xml file's content.

Understanding CVE-2020-2278

This CVE involves a vulnerability in the Jenkins Storable Configs Plugin that could be exploited by attackers with specific permissions.

What is CVE-2020-2278?

This CVE refers to a security flaw in Jenkins Storable Configs Plugin versions 1.0 and earlier, enabling unauthorized users to overwrite files on the Jenkins controller.

The Impact of CVE-2020-2278

The vulnerability allows attackers to replace existing files with malicious content, potentially leading to unauthorized access or data manipulation within the Jenkins environment.

Technical Details of CVE-2020-2278

The technical aspects of the CVE provide insights into the vulnerability and its implications.

Vulnerability Description

The issue arises from the plugin's lack of restrictions on user-specified file names, enabling attackers to overwrite files on the Jenkins controller.

Affected Systems and Versions

Product: Jenkins Storable Configs Plugin
Vendor: Jenkins project
Versions Affected: 1.0 and earlier

Exploitation Mechanism

Attackers with Job/Configure permission can exploit this vulnerability by replacing any '.xml' file on the Jenkins controller with a job config.xml file's content.

Mitigation and Prevention

Protecting systems from CVE-2020-2278 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update the Jenkins Storable Configs Plugin to a patched version.
Restrict Job/Configure permissions to trusted users only.

Long-Term Security Practices

Regularly monitor and audit file changes on the Jenkins controller.
Implement least privilege access controls to limit potential attack surfaces.

Patching and Updates

Ensure timely installation of security patches and updates to mitigate known vulnerabilities.